How can I use nodes to make a Genshin-like grass material?
It looks like the only thing you're missing is some color variation for each blade of grass.
If each blade of grass is an individual object, you can create variation with Object Info -&gt; Random plugged into a Hue/Saturation node.

If you have a clump of grass where multiple blades comprise the same object but each blade is separate, you need to mix in Geometry -&gt; Random Per Island.